Posted on February 25, 2019April 20, 2019 by Greg — Leave a commentSilicone Valve Cover Gaskets for your Z Engine! Outfit your L24 / L26 / L28 / L28ET with a permanent gasket solution! No need to replace the gasket every time you adjust your valves, and more resistant to leaking than a cork, composite, or even rubber gasket. Post navigationPrevious post: Silicone Valve Cover Gaskets for Your 510, 521, 610, 620, or 720 Engine! Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.